save the file

var file = RarArchive(this.files[0], function(err) {
if(err) {
console.log(err);
return;
}
this.entries.forEach(function(val) {
inst = val;
console.log('val', val); // example
var div = document.createElement('div');
div.textContent = val.path;
document.body.appendChild(div);
});
// this should save the file
this.get(inst , function(b ) {
body = document.getElementsByTagName('body')[0];
a = document.createElement('a');
a.setAttribute('download', '');
a.href = URL.createObjectURL(new Blob([b]));
a.innerHTML = "download";
body.appendChild(a);
});
// this should save the file EOL
});

should this save Blob file?